LegalFix
Sign In

§ 201.56-3 - Mustard family, Brassicaceae (Cruciferae).

Copy with citation
Copy as parenthetical citation

Kinds of seed: Broccoli, brussels sprouts, cabbage, Chinese cabbage, cauliflower, collards, garden cress, upland cress, water cress, kale, Chinese kale, Siberian kale, kohlrabi, mustard, pakchoi, radish, rape, rutabaga, and turnip.

General description.

Germination habit: Epigeal dicot.

Food reserves: Cotyledons which expand and become thin, leaf-like and photosynthetic. In Brassica, Sinapis, and Raphanus, the cotyledons are bi-lobed and folded, with the outer cotyledon being larger than the inner.

Shoot system: The hypocotyl elongates and carries the cotyledons above the soil surface; the epicotyl usually does not show any development within the test period.

Root system: A long primary root.

Abnormal seedling description.

Cotyledons:

Decayed at point of attachment.

Less than half of the original cotyledon tissue remaining attached.

Less than half of the original cotyledon tissue free of necrosis or decay.

Epicotyl:

Missing. (May be assumed to be present if the cotyledons are intact.)

[Reserved]

Hypocotyl:

Deep open cracks extending into the conducting tissue.

Malformed, such as markedly shortened, curled, or thickened.

Watery.

Root:

Weak, stubby, or missing primary root. (Secondary roots will not compensate for a defective root.)

[Reserved]

Seedling:

One or more essential structures impaired as result of decay from primary infection.

Albino.

Previous Section
§ 201.56-2 - Sunflower family, Asteraceae (Compositae).
Next Section
§ 201.56-4 - Cucurbit family, (Cucurbitaceae).